Cook once, eat twice. Or three times, or four times. The only limit is the size of your freezer.
Soups, casseroles, and stews are all great things to make and freeze, because they don't dry out. But you'd be surprised how well stuff like burgers, burritos, and breakfast foods will keep in the freezer as well.
Always package food you're freezing in a container or wrapping that's as air-tight as possible, label with the date and what it is, and thaw it in the fridge when it's time to defrost. Get more smart freezing tips here.
Vegan Tempeh Black Bean Burgers
Make twice as many as you need, cook them all, and freeze half. Recipe here.
Broccoli Quinoa Casserole